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Finding the Fourth Proportional to 172,798.02, 238,411.59 and 112,457.48

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Solution

The fourth proportional to 172,798.02, 238,411.59 and 112,457.48 is: 155,158.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,798.02 : 238,411.59 = 112,457.48 : x
  2. Step 2: Convert to fraction form
    172,798.02/238,411.59 = 112,457.48/x
  3. Step 3: Cross multiply
    172,798.02x = 238,411.59 × 112,457.48
  4. Step 4: Simplify right side
    172,798.02x = 26,811,165,000.42
  5. Step 5: Solve for x
    x = 26,811,165,000.42/172,798.02
  6. Step 6: Final answer
    x = 155,158.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.